springboot-patterns

The best way to structure a Spring Boot backend is using a layered architecture with Controllers, Facades, Services, and Repositories to separate concerns, prevent circular dependencies, and improve maintainability.

You implement REST API validation and exception handling in Spring Boot by using DTOs to structure payloads, applying validation annotations, and centralizing exception handling to manage API errors consistently.

Yes, the Spring Boot framework supports cross-cutting concerns including caching, asynchronous processing, and middleware filters to optimize backend performance and manage external calls.

You design Spring Data JPA repositories by defining data access interfaces and wrapping business logic inside transactional service methods to ensure database consistency and safe data access.

You need a Facade layer in Spring Boot when managing complex business logic spanning multiple services, acting as an orchestration point to prevent circular dependencies and maintain a clean architecture.

You add pagination to a Spring Boot REST API endpoint by configuring Spring Data repositories to return paginated data slices, enabling scalable listing endpoints for large datasets.